Lexmark MX910de Service Manual page 187

Action
Step 9
a
Upgrade the firmware.
Note: Contact your next level of support for the correct firmware
level to use.
b
Reset the printer.
c
Send the printer a print job.
Does the error remain?
Step 10
Is the printer an MFP?
Step 11
Run a copy job.
Does the error remain?
Step 12
Run a scan to PC job.
Does the error remain?
Step 13
Is there optional memory installed?
Step 14
a
Reinstall the memory.
b
Send a print job to the printer.
Does the error remain?
Step 15
a
Install a Lexmark‑recommended memory option.
b
Send a print job to the printer.
Does the error remain?
Step 16
Is there a modem installed?
Step 17
a
Reinstall the modem.
b
Reset the printer.
Does the error remain?
Yes
Go to step 31.
Go to step 11.
Go to step 31.
Go to step 31.
Go to step 14.
Go to step 15.
Go to step 31.
Go to step 17.
Go to step 18.
Diagnostic information
187
7421
No
Go to step 10.
Go to step 13.
Go to step 12.
Go to step 13.
Go to step 16.
Go to step 16.
The problem is solved.
Go to step 21.
Go to step 20.